return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C5H8 (Cyclobutane, methylene-)

using model chemistry: B3LYP/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/aug-cc-pVTZ
 hartrees
Energy at 0K-195.369391
Energy at 298.15K-195.377865
HF Energy-195.369391
Nuclear repulsion energy167.746779
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at B3LYP/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3126 3025 7.49      
2 A' 3113 3012 41.87      
3 A' 3079 2979 16.04      
4 A' 3061 2962 39.83      
5 A' 3035 2936 10.31      
6 A' 1738 1682 32.06      
7 A' 1501 1452 0.12      
8 A' 1475 1427 1.67      
9 A' 1443 1396 0.76      
10 A' 1259 1218 0.13      
11 A' 1223 1183 0.46      
12 A' 1096 1060 0.79      
13 A' 965 934 0.60      
14 A' 913 883 45.12      
15 A' 882 854 0.45      
16 A' 745 721 1.67      
17 A' 667 645 1.80      
18 A' 386 374 7.20      
19 A' 101 98 0.06      
20 A" 3202 3098 11.49      
21 A" 3082 2982 18.19      
22 A" 3031 2933 44.82      
23 A" 1461 1414 5.78      
24 A" 1282 1240 0.02      
25 A" 1241 1201 0.02      
26 A" 1225 1185 0.48      
27 A" 1188 1149 1.67      
28 A" 1042 1008 0.11      
29 A" 917 887 0.45      
30 A" 908 878 2.06      
31 A" 808 782 0.03      
32 A" 640 619 0.05      
33 A" 359 347 0.12      

Unscaled Zero Point Vibrational Energy (zpe) 25097.5 cm-1
Scaled (by 0.9675) Zero Point Vibrational Energy (zpe) 24281.8 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at B3LYP/aug-cc-pVTZ
ABC
0.34927 0.15404 0.11563

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.219 -0.395 1.093
C2 0.219 -0.395 -1.093
C3 -0.098 0.615 0.000
C4 0.219 -1.504 0.000
C5 -0.587 1.844 0.000
H6 -0.505 -0.488 1.902
H7 -0.505 -0.488 -1.902
H8 1.207 -0.239 1.530
H9 1.207 -0.239 -1.530
H10 -0.799 2.369 0.923
H11 -0.799 2.369 -0.923
H12 1.063 -2.190 0.000
H13 -0.703 -2.083 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C12.18501.52101.55702.61831.08973.08191.09182.80662.95063.56932.26512.2121
C22.18501.52101.55702.61833.08191.08972.80661.09183.56932.95062.26512.2121
C31.52101.52102.14271.32292.23572.23572.18452.18452.10292.10293.03612.7649
C41.55701.55702.14273.44392.27462.27462.21752.21754.11024.11021.08821.0885
C52.61832.61831.32293.44393.01013.01013.14603.14601.08311.08314.35893.9288
H61.08973.08192.23572.27463.01013.80341.76963.84303.03454.02862.99602.4901
H73.08191.08972.23572.27463.01013.80343.84301.76964.02863.03452.99602.4901
H81.09182.80662.18452.21753.14601.76963.84303.05963.34614.10432.48373.0641
H92.80661.09182.18452.21753.14603.84301.76963.05964.10433.34612.48373.0641
H102.95063.56932.10294.11021.08313.03454.02863.34614.10431.84615.01134.5482
H113.56932.95062.10294.11021.08314.02863.03454.10433.34611.84615.01134.5482
H122.26512.26513.03611.08824.35892.99602.99602.48372.48375.01135.01131.7698
H132.21212.21212.76491.08853.92882.49012.49013.06413.06414.54824.54821.7698

picture of Cyclobutane, methylene- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C2 91.826 C1 C3 C5 133.933
C1 C4 C2 89.121 C1 C4 H12 116.697
C1 C4 H13 112.260 C2 C3 C5 133.933
C2 C4 H12 116.697 C2 C4 H13 112.260
C3 C1 C4 88.225 C3 C1 H6 116.850
C3 C1 H8 112.420 C3 C2 C4 88.225
C3 C2 H7 116.850 C3 C2 H9 112.420
C3 C5 H10 121.544 C3 C5 H11 121.544
C4 C1 H6 117.407 C4 C1 H8 112.502
C4 C2 H7 117.407 C4 C2 H9 112.502
H6 C1 H8 108.422 H7 C2 H9 108.422
H10 C5 H11 116.912 H12 C4 H13 108.792
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability